The molecular formula C18H21ClN2 may refer to:
- Chlorcyclizine
- 1-(3-Chlorophenyl)-4-(2-phenylethyl)piperazine (3C-PEP)
- Clomacran
- Norclomipramine, also known as N-desmethylclomipramine and chlordesipramine
This set index page lists chemical structure articles associated with the same molecular formula.
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